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Two-Dimensional Pseudogap Effects of an Ultracold Fermi Gas in the BCS-BEC Crossover Region.
- Source :
-
Journal of Low Temperature Physics . May2013, Vol. 171 Issue 3/4, p341-347. 7p. - Publication Year :
- 2013
-
Abstract
- We investigate pseudogap phenomena originating from pairing fluctuations in the BCS-BEC crossover regime of a two-dimensional Fermi gas in a harmonic trap. Including pairing fluctuations within a T-matrix theory and effects of a trap within the local density approximation, we calculate the local density of states (LDOS) at the superfluid phase transition temperature T. In the weak-coupling regime, we show that the pseudogap already appears in LDOS around the trap center. The spatial region where the pseudogap can be seen in LDOS becomes wider for a strong pairing interaction. We also discuss how the pseudogap affects the spectrum of the photoemission-type experiment developed by JILA group. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00222291
- Volume :
- 171
- Issue :
- 3/4
- Database :
- Academic Search Index
- Journal :
- Journal of Low Temperature Physics
- Publication Type :
- Academic Journal
- Accession number :
- 86401116
- Full Text :
- https://doi.org/10.1007/s10909-012-0691-7